Price check

I am looking at possibly buying a Toro 48" Z recycler with a 25 hp Kohler, it has 75 hours on it, they are asking $5500. for it with a 6 month warranty. Is this a fair price for this unit ???
I am currently running a Toro 44" with jungle wheels, but I have several large accounts, that take me several hours to complete.
I am looking to upgrade for I am able to take on a few more accounts, and also to be able to do fall clean ups more effectivlety.